A strategic diversity team has resulted in improved hire rate figures and lower attrition rates for underrepresented groups, it added.

The gender division lessened within Facebook's non-tech departments, where 53 per cent of global employees were male and 47 per cent female.

The news comes after Google also revealed 70 per cent of its global workforce was male, and 60 per cent of its US workforce was white in figures released last month.

Laszlo Block, senior vice president of people operations at the company, said Google had "always been reluctant to publish numbers about the diversity of our workforce" in a blog post.

"We now realise we were wrong, and that it’s time to be candid about the issues. Put simply, Google is not where we want to be when it comes to diversity, and it’s hard to address these kinds of challenges if you’re not prepared to discuss them openly, and with the facts," he wrote.

Yahoo has also revealed that 37 per cent of its workforce is female, and only 23 per cent of senior managers at the company are women.

The diversity reports are part of a transparency drive amongst Silcon Valley's key players to reflect the diverse communities they serve.